Mention in docs that int formatting only adds underscores above 10000

[underyx]

Just spent a while looking for this info to give some teammates peace of mind that we won't start seeing 2_018, 1_024, and so on. I had to read the code to find out when underscores are added, which is not catastrophic, but not ideal either

[zsol]

Yes, we should make the docs clearer on this. Wanna put up a pr?

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On Tue, Oct 2, 2018, 08:35 Bence Nagy ***@***.***> wrote: Just spent a while looking for this info to give some teammates peace of mind that we won't start seeing 2_018, 1_024, and so on. I had to read the code to find out when underscores are added, which is not catastrophic, but not ideal either — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#546>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAEEtLu_7ACWIj8-AXabxNAFGzpEw9OOks5ugxdNgaJpZM4XDetJ> .

[underyx]

I could, yep! Opened the issue from my phone so I couldn't do it then. I saw some discussions about the logic and now it seems more complex than 'above 10000' though. Could you describe what rules I should document?

[zsol]

For integers longer than 5 digits, underscores are used. For floats, this rule applies to both sides of the decimal point

[underyx]

Not needed anymore, as the feature was removed due to #549